- California Martial Arts Academy - Children's and adults' programs. Locations in Irvine, Mission Viejo, and Rancho Santa Margarita.
- Nishiki Koi Club - Includes members' ponds, information on keeping koi, and meeting details.
- Orange American Youth Soccer Organization: AYSO Region 1335 - Serving the City of Orange, Villa Park, Orange Park Acres, East Anaheim, and Anaheim Hills.
- PlayOCgolf - Information about Orange County golf courses.
- The Irvine Ranch Wildlands and Parks - Offers parks, trails and wilderness for recreational activities.
- The Legacy Project - Documents the transformation of the shuttered El Toro Marine Corps Air Station into a metropolitan park, the Orange County Great Park, by oral history, photographs and video.
- The OC Dog - Quarterly print and online magazine with articles of interest to dog owners. Information on dog parks, shelters, and rescues.
